[G] Hard Magnetic Materials

[319] Microstructural origin of high coercivity in an (Nd,Dy)-Fe-B sintered magnet

*Xin Tang¹, J. Li¹, H. Sepehri-Amin^1,2, A. Bolyachkin¹, A. Martin-Cid³, S. Kobayashi³, Y. Kotani³, M. Suzuki³, A. Terasawa⁴, Y. Gohda⁵, T. Ohkubo¹, T Nakamura^2,3, K. Hono¹ (1. NIMS、2. Tohoku University、3. JASRI、4. RIST、5. Tokyo Institute of Technology)

Keywords:Coercivity、(Nd,Dy)-Fe-B、angular dependence of coercivity、Microstructure、magnetism of intergranular phase

The study reveals that a slight enrichment of Dy in the intergranular phase substantially reduces its magnetization, which is essential for achieving large coercivity in (Nd,Dy)-Fe-B sintered magnets.